Which phrase defines an appositive?

A word a group of words that renames a noun
A series of three or more items
A sentence of two independent clauses
A phrase of four words or more that begins a sentence

USING CORRECT PUNCTUATION. QUICK CHECK.

The phrase that defines an appositive is: A word or group of words that renames a noun.

The correct phrase that defines an appositive is: "A word or group of words that renames a noun."